陈存广,郭志猛,罗骥,曹慧钦,郝俊杰,叶安平.粉末液相模锻法制备BN增强Al-Cu基复合材料[J].稀有金属材料与工程,2016,45(1):165~170.[chencunguang,guozhimeng,luoji,caohuiqin,haojunjie,yeanping.Fabrication of Al-Cu Composite Reinforced with BN by Powder Liquid-Phase Forging[J].Rare Metal Materials and Engineering,2016,45(1):165~170.]
粉末液相模锻法制备BN增强Al-Cu基复合材料
投稿时间:2014-12-06  修订日期:2015-05-27
中文关键词:  粉末  液相模锻  氮化硼  铝基复合材料
基金项目:国家高技术研究发展计划(863计划)
中文摘要:
      采用粉末液相模锻技术制备出近全致密Al-5.3 wt% Cu-3.0 wt% h-BN复合材料,研究了该技术对复合材料致密化及界面结合状况的影响。采用SEM、XRD、TEM等分析测试手段对球磨前后粉末形貌、复合材料显微组织结构及物相组成进行表征,采用布氏硬度计对复合材料硬度进行测试。结果表明:在大量液相存在的情况下,施加外力可有效促进复合材料的致密化。粗铝粉(35 μm)制备的复合材料晶粒呈细条状,具有方向性,T6热处理后发生原位再结晶;细铝粉(2 μm)制备的复合材料晶粒细小,形貌不明显。复合材料界面由Al/Al2O3/BN组成,清晰可见,结合紧密。复合材料与基体合金相比,硬度提高近15%,细铝粉制备的复合材料硬度比粗铝粉略高。
Fabrication of Al-Cu Composite Reinforced with BN by Powder Liquid-Phase Forging
英文关键词:powder  liquid-phase forging  boron nitride  aluminum matrix composite
英文摘要:
      Al-5.3 wt% Cu composite reinforced with 3.0 wt% h-BN with nearly full desification was fabricated by the process of liquid-phase forging. The powder morphology and comparative structural characteristics were analyzed using X-ray diffraction, scanning and transmission electron microscopy, and the composite hardness was measured by Brinell tester. Special attention was paid to the effects of the technique on the densification and the interface bonding of as-forged composites. These revealed the composite densification can be promoted effectively with plenty of embedded liquid phase under pressure. The composites fabricated using aluminium powder with different granularity showed different grain characteristics, and in situ recrystallization occurred inside the original grains with 35 μm aluminium powder. Moreover, a good interface consisted of Al/Al2O3/BN was apparent in the composite. Compared with the basis alloy, the composite hardness was increased nearly by 15%, and the composite with 2 μm aluminium powder showed the better performance.
作者单位E-mail
陈存广 北京科技大学 chencunguang@126.com 
郭志猛 北京科技大学 zmguo@ustb.edu.cn 
罗骥 北京科技大学  
曹慧钦 北京科技大学  
郝俊杰 北京科技大学  
叶安平 北京科技大学  
摘要点击次数: 23
全文下载次数: 25
查看全文  查看/发表评论  
关闭